Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1900 - 1921 1922 - 1979 1980 - 1987 1988 - 1994 1995 - 2000 who am i to English
1900 - 1903 1904 - 1905 1906 - 1932 1933 - 1973 1974 - 2000 whom am i to English

Run your own experiment! Raw data is available for download here.
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